Nut-lock



(No Model.)

S. M. CHURCHILL.

NUT LOCK.

Patented Apr. 4,1882.

No. 255,839. 12y;

Q I "VEA/l SAMUEL M. CHURCHILL,

NUT-

' PATENT OFFICE.

OF STATE CENTRE, IOWA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 255,839, dated April 4,1882.

Application filed June 11, 1881. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL M. CHURCHILL, of State Centre, in the countyof Marshall and State of Iowa, have invented certain new and usefulImprovements in Nut-Locks; and I do hereby declare that the following isa full, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and usethesame, reference being had to the accompanying drawings, which formapart of this specification, and in which- Figure 1 is a side elevationof a railway-joint provided with my improved nut-locking device. Fig. 2is a longitudinal horizontal section through the fish-plate (orwasher-plate, as the case may be) with its key. Fig. 3 is a perspectiveView of the key detached.

Similar letters of reference indicate corresponding parts in allthefigures.

This invention relates more especially to devices for locking the nutsupon the fish-plate bolts of rail-joints, so as to prevent them fromworking loose by the constant jarring caused by passing trains; and itconsists in the detailed construction, combination, and arran gement ofthe parts,substantially as hereinafter more fully set forth and claimed.

My invention is adapted to be applied to the fish-plates of the rail'oints in the construction of new lines of railway, or, where the roadis already constructed with the ordinary fishplates, it may be appliedtothese in the form of auxiliary fish-plates or washer-plates. In

either case the construction and operation of my device is the same.

In the accompanying drawings,A designates a fish-plate or awasher-plate, as the case may be, which has the usual bolt-holes, a. Theplate is cut between each pair of bolt-holes with a suitably-constructeddie to form two semicircular slots, and the parts formed by said slotsare bent outwardly to form tongues B B, with a central solid part, O.

D is the key or 1ock-plate, which is made with a slot, d, and flangedends e e. To make the plate more stiff and rigid the upper edge mayalsobe flanged, if desired. After the nuts have been screwed home a key isslipped between each pair of nuts upon the shank formed by the tongues BB, with theircentral part, 0, with its flanged ends bearing against thesides of the nuts, as shown in Fig. l ofthe drawings.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States In a nut-lock, the combination ofthe plate A, having formed with it tongues B B, standing out from saidplate, and providing spaces between them and the plate A, and theangupermit its legs to fit or beinserted between the tongues B and theplate A, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

SAMUEL M. CHURCHILL.

Witnesses:

L. H. HOLE, H. HILLIs.

lar plate D, having an open slot, as at d, to

